Nut-locking device.



F. M. FUNDIS. NUT LOOKING DEVICE.

APPLIGATION FILED SEPT. 1, 1911.

Patented Feb.13,1912.

FIG. 5

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INVENTOR i r .BY

WITNESSES ATTORNEYS 1 TED STATES ATENT-FEIC rnnnnnicx M. ron'ms, or NEW,KENSDIGTON, PENNSYL17ANIA.

NUT- ooms DEVICE. i-

Specification of Letters Patent.

Application filed September 1, 1911. Serial 110. 647,137.

Patented Feb. 13, 1912.

To all whom it may concern:

Be it known that I, FREDERICK M. FUNDIS,-

a citizen of the United States of America, residing at New Kensington, in the county of VVestmoreland and State of Pennsylvania,

is positive in its action, not liable to injury by ordinary use, and easily installed by unskilled labor. Third, a sectional nut having simple and effective means for binding one of said sections upon a bolt. Fourth, a nut locking device consisting of comparatively few parts inexpensive-to manufacture and highly eflicient for the purposes for which it is intended.

I attain the above objects by a mechanical construction that will be hereinafter specifically described and then claimed, and reference will now be had to thedrawing, wherein like numerals of reference designate corresponding parts throughout the several views, in which Figure 1 is a longitudinal sectional view of the nut lock, Fig. 2 is a front elevation of a detached split sectionof the nut lock, Fig. 3 is a side elevation ofthe same, Fi 4 is a front elevation of a detached lockmg section of the nut lock, Fig. 5 is a sideelevation of the same, Fig. 6 is a perspective view of the split section of the nut lock, and Fig. 7

is a perspective view of the locking section thereof. The reference numerals 1 and 2 denote, by

the way of an example, two pieces of'material having alining openings 3 to receive a bolt 4, said bolt'having the threaded end 5 thereof protruding from the piece of material 2.

The reference numeral 6 denotes a Washer that is mounted against the piece of material 2, said washer having an opening to receive the bolt 4.

8 denotes a split 'nut'section having an opening 9 with the walls thereof threaded, as at 10 whereby said'nu't section can be screwed upon the threaded end 5 of the bolt to engage the washer 6. The nut section 8 has a radially disposed slit or slot 11 and the outer face of the section 8 has a semicircular groove 12. The groove 12 has its greatest depth at the end 13 thereof. The

groove 12 gradually decreases in depth from the end 13 to the opposite end 14 where it merges into the outer face of the nut section 8. The end 14 of the groove is located diametrically opposite the end 13 of the groove, and the end 13 is in greater proximity to the wall of the opening 9 than the end 11 of said groove, the object of which will presently appear.

Associated with the split section 8 is a locking nut section 15 having an opening 16 with the walls thereof screw threaded whereby,said locking nut section can be .eutering of the rib into the groove 12.

When the nut locking section 15 is screwed against the splitsection 8, the rib 17 rides into the groove 12 and as it. rides into said groove, the split section 8 is shifted Whereby the threads 10 of the split section 8 will bind upon the threaded end of the bolt 1. This action is caused by the end 1 1 of the groove 12 being removed a greater distance from the edge of the opening 9 than the end 13 ofv the groove, consequently the screwing of the nut section 15 tends to shift the split section 8 sidewise, thereby binding the threads of the nut'8 against the threads of the bolt 4, particularly at the split side of the nut section 8. In tapering the depth of the groove 12 and the depth of the rib 17, said rib can readily ride Into said groove and perform the action described above.

From the foregoing it will be observed that I. have devised a sectional nut wherein said sections are constructed in a manner that will permit of one of said sections being shifted independently of the other section, and it is this shifting of the one see,-

radially disposed split and the outer-side thereof provided with a semi-circular groove 'with one end of said groove in closer proximity to the opening of said nut than the opposite end, and the other section of said not having the inner face thereof provided with a. semi-circular rib adapted to ride into the groove of the split section of said nut and produce a sidewise movement of the split section of said nut that tends to clamp said split section upon said bolt. I

2. In a nut locking device, the combina-. tion with a bolt, of a sectional nut screwed upon said bolt, one section of said nut having aradially disposed slit and the outer side thereof provided .with a semi-circular groove tapering in depth'from one end-thereof to the opposite end and disposed eocentrically with respect to the bolt opening, and a semi-circular rib carried by the inner face of the other section of said nut and tapering from one 'endthereof to the opposite end whereby said rib can easily ride into the groove of the other section .of said rib and producing a sidewise movement of the split section of said nut, whereby said split section will clamp uponthe bolt. r

In testimony whereof I aflix my signature in the presence of two witnesses.

. FREDERICK M. FUNDIS Witnesses: V Rnvnonns LAUeHLm, WILLIAM Knnvr. 

